I have taken for the first time 2 Vitamin D2 pills 50,000 Units each , one last Friday and one this Monday, as prescribed by my Dr. for a Vitamin D defficinecy that showed on latest physical blood work. I am having symptoms of dizziness and off balance, like being on a swaying ocean liner. I have not heard back from my Dr. yet so my question is how long will it take for the Vit D2 to get out of my system, if that is what is causing the imbalance. I am 71 and in perfect health. I take only Effexor time release one 75 MG per day. Thanks,